Face Style Flowing Between Paragraphs in Paragraph Text Object. Bug?

Hello.

I've got a long credit roll in a single paragraph text object in Motion and, generally, the font face colors alternate on each line all the way through it. (One color for a person's role, another for their name.) It was originally imported as RTF from MS Word, and I did the initial coloring there (with the style painter).

In Motion, however, at a point mid-way in the text, when I try to change the color of one line of text, the change flows either forward or backward (depends on the situation) to adjacent lines, screwing up THEIR color. I believe there are "hard" carriage returns after each line, which in Word would make them separate paragraphs with their own styles, so this "style leakage" across (what I think are) one-line paragraphs should not be happening.

I've deleted existing lines and typed new lines in plain, white NORMAL style but when I go to color THEM they exhibit the same bad behavior (e.g. type 3 lines with CR at the end of each, set the face color of the first line, and the following 2 lines become colored as well.) It's behaving as though there are "soft-returns" between some of these lines (shift-return in Word) instead of hard-returns (CR). So that my 3 lines are considered 1 paragraph instead of 3 single-line paragraphs. Or there's a bug. Or Word put invisible junk in there. Or my mental model is completely wrong.

The documentation does not seem to discuss this subtlety.

I am not using any custom styles.

Wondering if any of you have any tips or thoughts.

Thanks.